Maeke



(No Model.) 7

A. U. LORINET 8v Z. P. AUBERTELLE.

SEWING MACHINE TAKE UP.

No. 244,268. Patented July 12,1881.

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WITNESSES UNITED STATES PATENT OFFICE,

AMAND U. LORINET AND ZAOHARIE P. AUBEBTELLE, OF OHALONS-SUR- MARNE, FRANCE.

SEWING-MACHINE TAKE-UP.

SPECIFICATION formingpart of Letters Patent'No. 244,268, dated July 12, 1881.

(No model.)

To all whom it may concern Be it known that we, AMAND ULYssE LORI- NET and ZAOHARIE PRUDENT AUBERTELLE, of Chalons-surMarne, in the Department of Marne, in the Republic of France, have invented certain new and useful Improvements in Sewing-Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, and to letters of reference marked thereon, which form apart of this specification.

Our invention has relation to devices for pre venting slip-stitches in operating sewing-machines; and it consists in the construction and arrangement of parts of a device which can be attached to any sewing-machine, and is operated by the vertically-reciprocating needlebar, as hereinafter more fully set forth.

In the annexed drawing I have shown a portion of the frame and needle-bar of a sewing-machine with the attachment and also the thread in side elevation.

The letter A designates the front part or box of the so-called goose-neck or frame of the machine, which forms the hearings for the presser-foot (not shown) and needle-bar F. Upon this box or frame is pivoted, at B, a lever, 0, which projects out toward and on one side of the needle-bar, which it touches on one side, and is bent at its outer end, as shown at O. This lever O (J is made with two parallel flanges, c a, forming a longitudinal groove or recess extending from its fulcrum B to its outer bent end, as clearly shown in the drawing. Within this groove or recess is placed a spring, A, secured at the inner pivoted end of the lever and reaching to its outer end, where it is bent to conform to the curvature of the bent part 0.

E is a spring, one end of which is fastened in frame A, while its other end bears against the under side of lever O O, tending to throw this in an upward direction.

Upon the needle-bar F is affixed a projecting stud or pin, G, which, on the downward stroke of the bar, strikes lever O C, which is thus kept vibrating up and down at each stroke of the machine.

The flanges c c, at the outer bent end, 0, of the lever, are notched, as shown at H, to form a passage for the thread I, which is clamped between lever O O and its spring A. In this manner the device acts as an auxiliary tension device, which is operated automatically by the reciprocations of the needle-bar, and serves to keep the thread taut during the formation of the loop, which receives the hook or shuttle (as the case may be) underneath the bed-plate, thus avoiding the slipping of the stitch consequent upon the looseness of the loop on the upstroke of the needle-bar.

We claim as our invention and desire to sesecure by Letters Patentof the United States- The combination, with the vertically-reciprocating needle-bar ot a sewing-machine, of the bent and. grooved lever O 0, having its fulcrum at B and notched at H, spring A resting within the grooved lever, and spring E bearing against its under side, the needlebar being provided with a stud or projection, Gr, adapted to strike the lever on its downstroke, substantially as and for the purpose herein shown and described.

In testimony that we claim the foregoing we have hereunto set our hands this 13th day of May, 1880.

AMAND ULYSSE LORINET. ZAOHARIE PRUDENT AUBERTELLE. Witnesses GEORGE WALKER, ARISTIGE APPERT. 

